Disable openssl compression support #6433
Merged
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Openssl was depending on zlib for SSL/TLS compression,
though it was trying to load it as a dynamic library.
On Windows especially this is an issue because the dll
could possibly be loaded from a insecure place,
so this can be exploited.
Moreover it's proven that compression can lead
to leaks of information; so we completely disable it
to resolve both issues.
First steps to mitigate #6426